verb (used with object), ostracized, ostracizing.
to exclude, by general consent, from society, friendship, conversation, privileges, etc.: His friends ostracized him after his father's arrest.
to banish (a person) from his or her native country; expatriate.
(in ancient Greece) to banish (a citizen) temporarily by popular vote.
Also, especially British, ostracise.

1640–50; < Greek ostrakízein, equivalent to óstrak(on) potsherd, tile, ballot (akin to óstreion oyster, shell) + -izein -ize

ostracizable, adjective
ostracization, noun
ostracizer, noun

1. shun, snub, blacklist.

1. accept.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To ostracize
World English Dictionary
ostracize or ostracise (ˈɒstrəˌsaɪz)
1.  to exclude or banish (a person) from a particular group, society, etc
2.  (in ancient Greece) to punish by temporary exile
[C17: from Greek ostrakizein to select someone for banishment by voting on potsherds; see ostracon]
ostracise or ostracise
[C17: from Greek ostrakizein to select someone for banishment by voting on potsherds; see ostracon]
'ostracism or ostracise
'ostracizable or ostracise
'ostracisable or ostracise
'ostracizer or ostracise
'ostraciser or ostracise

Collins English Dictionary - Complete & Unabridged 10th Edition
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Dictionary.com's 21st Century Lexicon
Main Entry:  ostracize
Part of Speech:  v
Definition:  to banish or expel; abolish
Etymology:  Greek ostrakizein 'to banish by voting with potsherds'
Dictionary.com's 21st Century Lexicon
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Word Origin & History

1640s, from Gk. ostrakizein (see ostracism). Related: Ostracization; ostracizing.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Government imposed smoking bans ostracize and disenfranchise a huge segment of
  these private businesses' regular clientele.
Trouble comes when you offend someone with the legal, financial or cultural
  power to censor and ostracize you.
Do not ostracize him or her due to the psychiatric condition.
Group punishments will be used to socially ostracize her--her colleagues and
  neighbors will be denied birth permits.
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